Knuckle Cherry

A term used amongst lower socio-economic class people to denote the breakage and fracture of knuckles to the point of deadening the nerves in the area, permitting one to punch hard objects with minimal injury due to Wolff's Law. The only recorded usage is in the homeless regions of central Ohioans, but usage probably extends further.

"You haven't popped your Knuckle Cherry yet? That's your problem. Ya gotta pop ot and it hurts for days then ya can hit harder and can't feel it, Joe."
-Big Mike
"Oh. Sounds painful. I'll pass."
-Joe
"Well, ya got to. I don't want you fightin' no more but ya gotta be ready. You're a brother."
-Big Mike